﻿    <p>
      An <em>IfcLibraryInformation</em> describes a library where a
      library is a structured store of information, normally
      organized in a manner which allows information lookup through
      an index or reference value. <em>IfcLibraryInformation</em>
      provides the library <em>Name</em> and optional
      <em>Description</em>, <em>Version</em>, <em>VersionDate</em>
      and <em>Publisher</em> attributes. A <em>Location</em> may be
      added for electronic access to the library.
    </p>
    <p>
      In a broder sense, <em>IfcLibraryInformation</em> includes
      the meta data for capture the revision information when
      checking in library and other data into a revision control
      system.
    </p>
    <blockquote class="history">
      HISTORY&nbsp; New entity in IFC2x.
    </blockquote>
    <blockquote class="change-ifc2x4">
      IFC4 CHANGE&nbsp; <em>Location</em> and <em>Description</em>
      attributes added; <em>Publisher</em> and <em>VersionDate</em> 
      data type changed; <em>HasLibraryReferences</em> inverse attribute
      added (previous LibraryReference changed to inverse).
    </blockquote>